Cut the mushrooms into leaves and fry (not just sauté, but smear them), season the minced meat a little, add and fry, chop the shallot and fry with it. When cooled, mix with the other ingredients (mash anchovy fillets) and season well.
Spinach filling:
Thaw spinach and press dry through a sieve. Sweat briefly in butter, mix with flour, sweat and thicken with cream. Mix with the rest of the ingredients and season.
Rinse a tart tin with cold water and cover with 4 defrosted puff pastry sheets (roll out a little). Bend up on the edge. First distribute the minced meat filling on top, then the spinach filling.
Brush the edges with the egg yolk and cream mixture and cover with 4 puff pastry sheets. Cut decorations from the remaining plates. Brush everything with the egg yolk and cream mixture.
Cut out a 2-euro chimney in the middle and keep it.
Bake at 200 ° for 30 minutes. Then close the chimney with the cut-out part and bake for another 15 minutes at 150 °.